Vacuum-valve



(Model.)

J. APOWLER.

VACUUM VALVE.

Nq. 244,879, Patented July-26,1881.

' WITNEssEs uw TOR ATTORNEYS p UNITI-:DV STATES PATENT OFFICE.,

JOHN, FOWLER, OF LOUISVILLE,`KENTUOKY.

'VACUUM-VALVE.

SPECIFICATION forming part of Letters Patent No. 244,879, dated July 26, 1881.

Application led November 20, 1880. (Model.)

To all whom it may concern:

Be it known that I, JOHN FOWLER, of Louisville, in the county of Jefferson and State of Kentucky, have invented a new and valuable Improvement in Vacuum-Valves;-and I do hereby declare that the following is a full, clear,

and exact description of the construction and operation of the same, reference being had to the annexed drawings, making a part ot this sents a valve-seat having a ilange, B, for fastening in place, and the raised seat proper, C. Projecting outward from this seat G is an arm, D, which serves as a fulcrum for an elbow-le` ver, E, which is held by a bolt, a, between ears b b of arm D, said bolt a passing through the nut c, and having a perforation, d, for a locking pm or ring, e.

F represents the valve, made to t upon the face f of seat C, and having the portion of its surfacefitting said face grooved, as shown at g, which said groove makes it it tighter and renders it easier to be removed. On the back this valve F has a boss, G, in which is a socket, h. The lower arm, k, of lever E is turnedinh is loosely Ward at la', and entering socket secured therein by a pin, Z.

H is a weight, which is slotted at m and 3 5 passed over arm a of lever E, and made adjustable thereon by a set-screw, p. This'valve is to be placed within any receptacle which is likely to be affected byhaving a vacuum formed therein, such as stills. The Weight H is ad- 4o justed upon arm 'n to suit the desired amount of pressure. When there is pressure within the valve Will be kept closed, but any tendency to form a vacuum will be counteracted by outside pressure forcing open the valve and admitting air.

Iam aware that a vacuum or air valve is not broadly new, and I desire only to be protected in the construction herein shown and described.

In a vacuum or air valve, the valve-seat A, having seat proper, C, from which projects the arm D, carrying ears b b at its outer end, the elbow-lever E, pivoted between the ears b b, having weight H, and the arm k, loosely pivoted at 5 5 its lower end at l to the boss G on the valve F, constructed, combined, and operating substantially as and for the purpose set forth.

In testimony that I claim the above I have hereunto subscribed my name in the presence 6o of two witnesses.

JOHN FOVVLFJR.

Witnesses:

GEORGE W. LEVI, K. N. ADAMS. 

